Arithmetic and control unit



FIG. 1 is a front, top, right perspective view of an arithmetic andcontrol unit showing my new design;

FIG. 2 is a front elevational thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

FIG. 7 is an enlarged perspective view thereof along the lines 7-7 and7′-7′ of FIG. 1; and,

FIG. 8 is an enlarged perspective view thereof along the lines 8-8 and8′-8′ of FIG. 1.

The broken lines illustrate portions of the arithmetic and control unitthat form no part of the claimed design.

CLAIM The ornamental design for an arithmetic and control unit, as shown. 